KR20240022764A - Battery pack and device including the same - Google Patents

Abstract

A battery pack according to an embodiment of the present invention includes a plurality of battery modules; and a pack frame for accommodating the battery module, wherein the pack frame includes a bottom portion and a side portion, and a particle collection portion is formed on the side portion of the pack frame.

Description

Battery pack and device including the same {BATTERY PACK AND DEVICE INCLUDING THE SAME}

The present invention relates to a battery pack and a device containing the same, and more specifically, to a battery pack and a device with improved safety.

As technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing. In particular, secondary batteries are attracting much attention as an energy source for not only mobile devices such as mobile phones, digital cameras, laptops, and wearable devices, but also power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles.

Meanwhile, as the need for large-capacity structures has increased recently, including use as an energy storage source, there has been a demand for a battery pack with a multi-module structure in which multiple battery modules are connected in series and/or parallel and the battery modules are aggregated. is increasing.

Additionally, when configuring a battery pack by connecting a plurality of battery cells in series/parallel, a battery module consisting of at least one battery cell is first constructed, and other components are added using this at least one battery module to pack the battery pack. This method of configuring is common.

In general, when the temperature of a secondary battery rises higher than an appropriate temperature, the performance of the secondary battery may deteriorate, and in severe cases, there is a risk of explosion or ignition. In particular, the temperature of a battery module or battery pack having multiple secondary batteries, that is, battery cells, can increase rapidly and severely due to the addition of heat from the multiple battery cells in a small space. In other words, in the case of a battery module in which multiple battery cells are stacked and a battery pack equipped with such battery modules, high output can be obtained, but it is not easy to remove heat generated from the battery cells during charging and discharging. If the heat dissipation of the battery cell is not performed properly, the battery cell deteriorates faster, its lifespan is shortened, and the possibility of explosion or ignition increases.

1 is a diagram showing a conventional battery pack.

Referring to FIG. 1, a conventional battery pack 10 includes a plurality of battery modules 1 and a pack frame 11 accommodating the battery modules 1, and has a structure through which gas inside the battery pack can be vented. included.

However, the conventional battery pack 10 does not have a structure that can collect high-temperature particles emitted from the battery cells when the inside of the battery pack ignites, so there is a possibility of flames occurring as the high-temperature particles are discharged to the outside along with the venting gas. It was very high. In particular, when the inside of a battery pack ignites, high-temperature particles emitted from the battery cells are released to the outside along with the venting gas, and may act as an ignition source and cause a large-scale fire.

Therefore, when the inside of the battery pack ignites, it is a structure that discharges venting gas and prevents external exposure of the flame. In particular, high-temperature particles and ignition sources are collected inside the battery pack and prevented from being exposed to the outside, thereby minimizing the probability of flame occurrence. There is a need for a structure that can

The problem to be solved by the present invention is to provide a battery pack with improved safety and a device including the same.

However, the problem to be solved by the present invention is not limited to the above-mentioned problem, and problems not mentioned can be clearly understood by those skilled in the art from this specification and the attached drawings. There will be.

A battery pack according to an embodiment of the present invention includes a plurality of battery modules; and a pack frame for accommodating the battery module, wherein the pack frame includes a bottom portion and a side portion, and a particle collection portion is formed on the side portion of the pack frame.

The particle collection unit may be formed on an inner surface of the pack frame.

The particle collecting unit may include a particle collecting assembly, and the particle collecting assembly may be formed by arranging a plurality of particle collecting members.

The side portion includes a front side portion, a rear side portion, and left and right side portions, and the particle collecting assembly includes: a first particle collecting assembly formed on the front side portion and a front corner portion where the front side portion and the left and right side portions are coupled; a second particle collection aggregate formed on the front side portion; a third particle collection aggregate formed on the left and right side surfaces; a fourth particle collection aggregate formed at a rear corner portion where the rear side portion and the left and right side portions are joined; And it may include a fifth particle collection aggregate formed on the rear side portion.

It further includes a plurality of exhaust ports formed in the front side portion and the rear side portion, wherein the first particle collecting assembly, the second particle collecting assembly, and the fifth particle collecting assembly are each formed at positions corresponding to the positions of the exhaust ports. You can.

The particle collecting member includes: a first particle collecting member including a bent portion; a second particle collecting member formed in a plate shape; a third particle collecting member formed in a plate shape and including an extended fixing portion extending from the plate-shaped surface; and a fourth particle collecting member that includes a bent portion and has different areas on one side and the other side formed around the bent portion.

The first particle collecting assembly includes the first particle collecting member and the second particle collecting member, the first particle collecting members are formed on both sides of the exhaust port, and the bending of the first particle collecting member One end of the first particle collecting member bent by the portion may be arranged to face different directions.

The first particle collecting assembly includes a plurality of second particle collecting members, the plurality of second particle collecting members are spaced apart from each other at regular intervals along the front corner, and the second particle collecting member is located at the front corner. It may be formed obliquely to form an angle of less than 90 degrees with the portion.

The second particle collecting assembly includes a plurality of first particle collecting members, the first particle collecting members are formed on both sides of the exhaust port, and the first particle collecting member is bent by the bent portion of the first particle collecting member. One end of the first particle collecting member may be arranged to face different directions.

The third particle collecting assembly may include the third particle collecting member.

The fourth particle collecting assembly includes a plurality of second particle collecting members, the plurality of second particle collecting members are arranged at regular intervals along the rear corner, and the second particle collecting member is located at the rear corner. It may be formed obliquely to form an angle of less than 90 degrees with the portion.

The fifth particle collecting assembly includes the fourth particle collecting member, the fifth particle collecting members are formed on both sides of the exhaust port, and the fourth particle collecting member is bent by the bent portion of the fourth particle collecting member. 4 One end of the particle collecting member may be arranged to face different directions.

A device according to another embodiment of the present invention includes the battery pack described above.

The battery pack according to an embodiment of the present invention includes a particle collection portion formed on the side of the pack frame, so that high-temperature particles and ignition sources are collected inside the battery pack and are prevented from being exposed to the outside, thereby minimizing the possibility of flame generation. You can.

The effects of the present invention are not limited to the effects described above, and effects not mentioned can be clearly understood by those skilled in the art from this specification and the attached drawings.

1 is a diagram showing a conventional battery pack.
Figure 2 is a plan view showing a battery pack according to an embodiment of the present invention.
Figure 3 is a perspective view showing the battery pack of Figure 2.
Figure 4 is a perspective view showing a battery module accommodated in the battery pack of Figures 2 and 3.
FIG. 5 is an enlarged view of the first particle collection assembly 500A of FIG. 3.
FIG. 6 is an enlarged view of the second particle collection assembly 500B of FIG. 3.
FIG. 7 is an enlarged view of the third particle collection assembly 500C of FIG. 3.
FIG. 8 is an enlarged view of the fourth particle collection assembly 500D of FIG. 3.
FIG. 9 is an enlarged view of the fifth particle collection assembly 500E of FIG. 3.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement it. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, so the present invention is not necessarily limited to what is shown. In the drawing, the thickness is enlarged to clearly express various layers and areas. And in the drawings, for convenience of explanation, the thicknesses of some layers and regions are exaggerated.

Additionally, when a part of a layer, membrane, region, plate, etc. is said to be “on” or “on” another part, this includes not only cases where it is “directly above” another part, but also cases where there is another part in between. . Conversely, when a part is said to be “right on top” of another part, it means that there is no other part in between. In addition, being "on" or "on" a reference part means being located above or below the reference part, and necessarily meaning being located "above" or "on" the direction opposite to gravity. no.

In addition, throughout the specification, when a part is said to "include" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary.

In addition, throughout the specification, when referring to “on a plane,” this means when the target portion is viewed from above, and when referring to “in cross section,” this means when a cross section of the target portion is cut vertically and viewed from the side.

The first and second terms used in this application may be used to describe various components, but the components should not be limited by the terms. Terms are used only to distinguish one component from another.

Below, a battery pack according to an embodiment of the present invention will be described.

Figure 2 is a plan view showing a battery pack according to an embodiment of the present invention. Figure 3 is a perspective view showing the battery pack of Figure 2. Figure 4 is a perspective view showing a battery module accommodated in the battery pack of Figures 2 and 3.

2 to 4, a battery pack 1000 according to an embodiment of the present invention includes at least one battery module 100; and a pack frame 1100 that accommodates the battery module 100.

Referring to FIG. 4, the battery module 100 includes a battery cell stack 300 formed by stacking a plurality of battery cells 200 along a preset direction, and a module frame ( 400). Additionally, the module frame 400 may have a structure that covers the four sides corresponding to the top and bottom and the left and right sides of the battery cell stack 300, and the front and rear surfaces of the battery cell stack 300 may be open. . The front and rear surfaces of the battery cell stack 300 opened by the module frame 400 may be covered by an end plate. Here, since there is no particular limitation on the type of the plurality of battery cells 200, they may be pouch-type secondary batteries or square-shaped secondary batteries.

At this time, referring to FIGS. 2 and 3 , the pack frame 1100 may include a bottom portion 1110 and a side portion 1120. A plurality of battery modules 100 may be located on the bottom 1110 of the pack frame 1100. That is, the pack frame 1100 of the present invention may specifically be a lower pack frame 1100, and a plurality of battery modules 100 are disposed on the bottom 1110 of the pack frame 1100, and the pack frame ( 1100) and the plurality of battery modules 100 may be covered by an upper pack frame (not shown). At this time, the battery module 100 disposed on the bottom 1110 may include a first battery module 101 and a second battery module 102, and a partition wall is located between the battery modules 100 to The space between modules 100 can be divided.

Additionally, the side portion 1120 may include a front side portion 1120a, a rear side portion 1120c, and left and right side portions 1120b. At this time, the front side portion 1120a may be a side portion 1120a formed in the -x direction with respect to the center of the battery pack 1000 where the bottom portion 1110 of FIG. 3 is formed, and the rear side portion 1120c may be a side portion 1120c formed in the x direction. The left and right side portions 1120b may refer to the side portions formed in the y-direction or -y direction, respectively, as the left side portion or the right side portion, based on the center of the battery pack 1000 where the bottom portion 1110 of FIG. 3 is formed. The opposite may be true. Therefore, for convenience, the left side part and the right side part may be collectively referred to as the left and right side parts 1120b.

Meanwhile, the battery pack 1000 according to this embodiment may include an exhaust port 1125 formed on the front side portion 1120a and the rear side portion 1120b, as shown in FIGS. 5, 6, and 9, which will be described later. You can. Specifically, a plurality of exhaust ports 1125 may be formed. At this time, the exhaust port 1125 can prevent thermal runaway inside the battery pack by quickly discharging the venting gas to the outside when a flame occurs within the battery pack.

However, in the case of the conventional battery pack 10, there is no structure that can collect high-temperature particles emitted from the battery cells when the inside of the battery pack ignites, so the high-temperature particles are discharged to the outside along with the venting gas, resulting in flames. The possibility was very high. In particular, when the inside of a battery pack ignites, high-temperature particles emitted from the battery cells are released to the outside along with the venting gas, and may act as an ignition source and cause a large-scale fire.

Accordingly, the particle collection portion 500 may be formed on the side portion 1120 of the pack frame 1100 of the battery pack 1000 according to this embodiment. In particular, the battery pack 1000 according to this embodiment forms a particle collection unit 500 on the venting path of high-temperature gas and particles, taking into account the flow of high-temperature gas and particles inside the battery pack 1000. By determining the position where the particle collection unit 500 is formed, it is possible to achieve improved battery pack stability through effective particle collection. In particular, the particle collection unit 500 predicted the flow of gas and particles inside the battery pack 1000 through simulation, and compared to gas injection, high-temperature particles with a large mass have greater inertia, so the particles have a greater ability to move in a straight line. By forming the particle collection unit 500 at an appropriate location to collect You can.

At this time, the particle collection unit 500 may be formed on the inner surface of the pack frame 1100. The inner surface of the pack frame 1000 is a surface located inside the pack frame 1000 facing the plurality of battery modules. Since high-temperature particles generated from battery cells and battery modules flow inside the battery pack 1000, a particle collection unit 500 is also formed on the inner side of the battery pack 1000 and pack frame 1100 to effectively collect particles. You can.

At this time, the particle collection unit 500 includes a particle collection assembly (500A, 500B, 500C, 500D, 500E), and the particle collection assembly (500A, 500B, 500C, 500D, 500E) includes a plurality of particle collection members (510, 520, 530, 540) may be arranged and formed. As described above, the particle collection unit 500 is set by predicting the flow inside the battery pack 1000 through simulation, and has an appropriate shape of particle collection aggregates 500A and 500B depending on the location of the particle collection unit 500. , 500C, 500D, 500E) and particle collection members 510, 520, 530, and 540, the stability of the battery pack can be improved.

Below, the particle collection aggregates 500A, 500B, 500C, 500D, and 500E included in the battery pack 1000 according to this embodiment will be described in detail.

FIG. 5 is an enlarged view of the first particle collection assembly 500A of FIG. 3. FIG. 6 is an enlarged view of the second particle collection assembly 500B of FIG. 3. FIG. 7 is an enlarged view of the third particle collection aggregate 500C of FIG. 3. FIG. 8 is an enlarged view of the fourth particle collection assembly 500D of FIG. 3. FIG. 9 is an enlarged view of the fifth particle collection assembly 500E of FIG. 3.

Referring to FIG. 5, the battery pack 1000 according to this embodiment collects first particles formed on the front side portion 1120a and the front corner portion 1120ac where the front side portion 1120a and the left and right side portions 1120b are joined. It may include an aggregate (500A). At this time, the first particle collection aggregate 500A may be formed at a position corresponding to the position of the exhaust port 1125.

Additionally, the first particle collecting assembly 500A may include a first particle collecting member 510 and a second particle collecting member 520. In particular, the first particle collecting member 510 may be formed on both sides of the exhaust port 1125, respectively. More specifically, the first particle collecting members 510 formed on both sides of the exhaust port 1125 are the first particle collecting members 510 bent by the bent portion 511 of the first particle collecting member 510. One end 515 may be arranged to face different directions. Specifically, in FIG. 3, when one end of one first particle collecting member 510 points in a specific direction between the x-axis and the y-axis, one end of the other first particle collecting member 510 points toward the x-axis and - It may point to a specific direction between the y-axes. Accordingly, by arranging the ends 515 of the first particle collecting member 510 to face different directions, it is possible to effectively collect particles while preventing performance degradation of the exhaust port 1125.

Furthermore, the first particle collecting assembly 500A may include a plurality of second particle collecting members 520. At this time, the second particle collecting member 520 is disposed at regular intervals along the front corner portion 1120ac, and the second particle collecting member 520 has an angle of less than 90 degrees with the front corner portion 1120ac. It can be formed obliquely to achieve . Therefore, by forming the second particle collection member 520 on the front corner portion 1120ac, where the direction of movement of particles in the venting passage changes, it is possible to collect particles on the corner portion and prevent leakage to the outside.

Referring to FIG. 6, the battery pack 1000 according to this embodiment may include a second particle collection aggregate 500B formed on the front side portion 1120a. At this time, the second particle collection aggregate 500B may be formed at a position corresponding to the position of the exhaust port 1125. The second particle collecting assembly 500B may include a plurality of first particle collecting members 510.

Specifically, the first particle collecting members 510 of the second particle collecting assembly 500B may be formed on both sides of the exhaust port 1125, respectively. In addition, the first particle collecting member 510 formed on both sides of the exhaust port 1125 is one end of the first particle collecting member 510 bent by the bent portion 511 of the first particle collecting member 510. (515) may be arranged to face different directions. Specifically, in FIG. 3, when one end of one first particle collecting member 510 points in a specific direction between the x-axis and the y-axis, one end of the other first particle collecting member 510 points toward the x-axis and - It may point to a specific direction between the y-axes. Accordingly, by arranging the ends 515 of the first particle collecting member 510 to face different directions, it is possible to effectively collect particles while preventing performance degradation of the exhaust port 1125.

Referring to FIG. 7, the battery pack 1000 according to this embodiment may include a third particle collection aggregate 500C formed on the left and right side portions 1120b. At this time, the third particle collection assembly 500c may include a third particle collection member 530. In addition, although a single third particle collecting member 530 is shown in FIG. 7, the present invention is not limited thereto, and may include a plurality of third particle collecting members 530. At this time, the third particle collection member 530 is formed between the battery module 100 and the left and right side portions 1120b of the pack frame 1100 in the venting passage, so that high-temperature particles flowing in a narrow space can be effectively collected. .

Referring to FIG. 8, the battery pack 1000 according to this embodiment includes a fourth particle collection aggregate 500D formed at the rear corner portion 1120cc where the rear side portion 1120c and the left and right side portions 1120b are joined. can do. At this time, the fourth particle collecting assembly 500D may include a plurality of second particle collecting members 520. In addition, the second particle collecting member 520 is disposed at regular intervals along the rear corner portion (1120cc), and the second particle collecting member 520 has an angle of less than 90 degrees with the rear corner portion (1120cc). It can be formed obliquely to achieve . Therefore, by forming the second particle collection member 520 on the rear corner portion (1120cc) where the moving direction of the particles changes in the venting passage, the particles are collected on the corner portion and prevented from flowing further, thereby preventing the particles from flowing any further. Leakage into the furnace can be prevented.

Referring to FIG. 9, the battery pack 1000 according to this embodiment may include a fifth particle collection aggregate 500E formed on the rear side portion 1120c. At this time, the fifth particle collection assembly 500E may be formed at a position corresponding to the position of the exhaust port 1125. At this time, the fifth particle collection assembly 500E may include a plurality of fourth particle collection members 540.

Specifically, the fourth particle collection member 540 of the fifth particle collection assembly 500E may be formed on both sides of the exhaust port 1125, respectively. In addition, the fourth particle collecting member 540 formed on both sides of the exhaust port 1125 has one end of the fourth particle collecting member 540 bent by the bent portion 541 of the fourth particle collecting member 540. (545) may be arranged to face different directions. Specifically, in FIG. 3, when one end 545 of one fourth particle collecting member 540 points in a specific direction between the -x axis and the y axis, one end of the other fourth particle collecting member 540 ( 545) may indicate a specific direction between the -x axis and -y axis. Accordingly, by arranging the ends 545 of the fourth particle collecting member 540 to face different directions, it is possible to effectively collect particles while preventing performance degradation of the exhaust port 1125. Moreover, the fifth particle collecting assembly 500E may include the first particle collecting member 510 instead of the fourth particle collecting member 540, and may include the first particle collecting member 510 and the fourth particle collecting member. It is also possible to include all (540).

Below, the particle collection members 510, 520, 530, and 540 included in the battery pack 1000 according to this embodiment will be described in more detail.

The battery pack 1000 according to this embodiment may include a plurality of particle collection members 510, 520, 530, and 540 formed in the particle collection unit 500.

First, referring to FIGS. 5 and 6 , the first particle collecting member 510 may include a bent portion 511 as described above. That is, the first particle collecting member 510 may have a plate shape or a plate shape bent by the bent portion 511. Accordingly, the first particle collecting member 510 is formed at the location of the venting passage and the exhaust port to collect particles on the inner surface of the bent portion 511, thereby preventing high-temperature particles from flowing through the venting passage or being discharged to the outside through the exhaust port. can do.

Additionally, referring to FIGS. 5 and 8 , the second particle collecting member 520 may be formed in a plate shape. That is, the second particle collecting member 520 is formed by a plurality of second particle collecting members 520 spaced apart from each other at regular intervals, and the plurality of second particle collecting members 520 include corner portions 1120ac and 1120cc. It may be arranged to form a certain angle of less than 90 degrees. That is, a plurality of second particle collecting members 520 can be formed to secure a space for collecting particles, and by collecting high-temperature particles in the space, high-temperature particles can be prevented from flowing through the venting passage. You can.

Additionally, referring to FIG. 7 , the third particle collecting member 530 is formed in a plate shape and may include an extension fixing portion 535 extending from the plate surface 531 . That is, the third particle collection member 530 can suppress the flow of high-temperature particles in a narrow venting path by being inserted between the battery module 100 and the pack frame 1100 by the extension fixing part 535. It can effectively collect particles.

In addition, the fourth particle collecting member 540 includes a bent portion 541, and the areas of one side and the other side formed around the bent portion 541 may be different from each other. That is, as the fourth particle collecting member 540 is formed in the exhaust port 1125, the area of one side 547 in contact with the exhaust port 1125 is formed to be smaller than the area of the other side and is fitted into the exhaust port 1125. It can be combined, etc., or can form various types of combinations. In addition, the fourth particle collecting member 540 is formed at the location of the venting passage and the exhaust port and collects particles in the bent portion 541, thereby preventing high temperature particles from flowing through the venting passage or being discharged to the outside through the exhaust port. .

Therefore, as described above, the battery pack 1000 according to the present embodiment includes a particle collection unit 500, and the particle collection unit 500 is composed of a plurality of particle collection aggregates 500A, 500B, 500C, 500D, and 500E. A plurality of particle collection members 510, 520, 530, and 540 formed in the particle collection aggregates 500A, 500B, 500C, 500D, and 500E collect high-temperature particles inside the battery pack, thereby preventing the high-temperature particles from It can prevent it from being released to the outside and acting as an ignition source.

In particular, the particle collection unit 500 predicted the flow inside the battery pack 1000 through simulation, and compared to gas injection, high-temperature particles with a large mass have greater inertia, making it possible to collect particles with high straight-line movement. By forming the particle collection unit 500, that is, the particle collection aggregates 500A, 500B, 500C, 500D, and 500E, at an appropriate location, high temperature particles generated inside the battery pack 1000 are discharged through the exhaust port 1125. The risk of fire occurring due to exposure to the outside can be minimized.

In addition, even when a flame occurs inside the battery pack, it can be quickly discharged to the outside to prevent thermal runaway, and by quickly releasing only the gas, the occurrence of flame outside the battery pack is minimized and the safety of the battery pack (1000) is improved, thereby improving the safety of the battery pack (1000). can protect.

In addition, the battery pack 1000 of the present invention, in addition to the configuration described above, adds a battery management system (BMS) and a cooling device that collects one or more battery modules and manages the temperature or voltage of the battery. It may be a packed structure.

Additionally, the battery pack 1000 of the present invention can be applied to various devices. These devices can be applied to transportation means such as electric bicycles, electric cars, and hybrid cars, but the present invention is not limited thereto and can be applied to various devices that can use battery modules, and this also falls within the scope of the present invention. .

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and may be used in the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

100: battery module
200: battery cell
300: Battery cell laminate
400: module frame
500: particle collection unit
1000: Battery pack
1100: pack frame
1110: bottom part
1120: side part
1125: exhaust port

Claims (13)

A plurality of battery modules; and
Comprising a pack frame that accommodates the battery module,
The pack frame includes a bottom portion and a side portion,
A battery pack in which a particle collection portion is formed on the side portion of the pack frame. In paragraph 1:
A battery pack in which the particle collection unit is formed on an inner surface of the pack frame. In paragraph 1:
The particle collection unit includes a particle collection aggregate,
The particle collection assembly is a battery pack formed by arranging a plurality of particle collection members. In paragraph 3,
The side portion includes a front side portion, a rear side portion, and left and right side portions,
The particle collection aggregate is,
a first particle collection aggregate formed on the front side portion and a front corner portion where the front side portion and the left and right side portions are joined;
a second particle collection aggregate formed on the front side portion;
a third particle collection aggregate formed on the left and right side surfaces;
a fourth particle collection aggregate formed at a rear corner portion where the rear side portion and the left and right side portions are joined; and
A battery pack including a fifth particle collection aggregate formed on the rear side portion. In paragraph 4,
Further comprising a plurality of exhaust ports formed on the front side portion and the rear side portion,
The first particle collection assembly, the second particle collection assembly, and the fifth particle collection assembly are each formed at a position corresponding to the position of the exhaust port. In paragraph 4,
The particle collection member is,
A first particle collecting member including a bent portion;
a second particle collecting member formed in a plate shape;
a third particle collecting member formed in a plate shape and including an extended fixing portion extending from the plate-shaped surface; and
A battery pack including a fourth particle collecting member that includes a bent portion and has different areas on one side and the other side formed around the bent portion. In paragraph 6:
The first particle collection aggregate,
Comprising the first particle collecting member and the second particle collecting member,
The first particle collecting members are formed on both sides of the exhaust port, respectively,
A battery pack in which one end of the first particle collecting member bent by the bent portion of the first particle collecting member is disposed to face different directions. In paragraph 7:
The first particle collection aggregate,
It includes a plurality of second particle collecting members,
The plurality of second particle collecting members are arranged to be spaced apart at regular intervals along the front corner portion, and the second particle collecting member is formed obliquely to form an angle of less than 90 degrees with the front corner portion. In paragraph 6:
The second particle collection aggregate,
It includes a plurality of first particle collecting members,
The first particle collecting members are formed on both sides of the exhaust port, respectively,
A battery pack in which one end of the first particle collecting member bent by the bent portion of the first particle collecting member is disposed to face different directions. In paragraph 6:
The third particle collection aggregate is,
A battery pack including the third particle collecting member. In paragraph 6:
The fourth particle collection aggregate is,
It includes a plurality of second particle collecting members,
The plurality of second particle collecting members are arranged to be spaced apart at regular intervals along the rear corner portion, and the second particle collecting member is formed obliquely to form an angle of less than 90 degrees with the rear corner portion. In paragraph 6:
The fifth particle collection aggregate is,
Including the fourth particle collecting member,
The fifth particle collecting member is formed on both sides of the exhaust port, respectively,
A battery pack in which one end of the fourth particle collecting member bent by the bent portion of the fourth particle collecting member is disposed to face different directions. A device comprising the battery pack according to claim 1.